Kenny Grono Edges can be finished by gluing on edge banding (a veneer that is the thickness of the plywood).

Philip Shie deshy, the edges can be finished by edgebanding, which is veneer that comes in rolls of various widths... 2 basic types: one that is pre-glued and you can just iron it on, or the another (such as Fastcap brand) type that you just peel-and-stick (much faster)... You would need to trim the edges to fit. Some people choose to expose edges for the right kind of plywood such as Apply-ply or baltic birch plywood.

Amanda Simons, lumber yards are always better. Not only can you find a much larger selection of plywood, the prices are typically lower than big box stores for the same type of lower end ply. Just know that some places won't cut the plywood down if you don't have a car/truck large enough to transport the entire sheet (4' x 8')